File mgetty-gcc15.patch of Package mgetty

diff -upr mgetty-1.2.1.orig/hyla_nsf.c mgetty-1.2.1/hyla_nsf.c
--- mgetty-1.2.1.orig/hyla_nsf.c	2025-05-13 14:10:12.860908198 +0000
+++ mgetty-1.2.1/hyla_nsf.c	2025-05-13 14:22:49.891709719 +0000
@@ -39,9 +39,11 @@
 
 #ifdef FAX_NSF_PARSER
 
+#if __STDC_VERSION__ < 202311L
 typedef char bool;
 #define true 1
 #define false 0
+#endif
 
 struct ModelData 
 {
diff -upr mgetty-1.2.1.orig/login.c mgetty-1.2.1/login.c
--- mgetty-1.2.1.orig/login.c	2025-05-13 14:10:12.861475059 +0000
+++ mgetty-1.2.1/login.c	2025-05-13 14:21:37.046250649 +0000
@@ -116,7 +116,7 @@ void login_dispatch _P3( (user, is_callb
     int file_version = 1;		/* login.config format changed! */
     char * line, * key, *p;
     struct passwd * pw;
-    extern struct passwd * getpwnam();
+    extern struct passwd * getpwnam(const char *name);
 
     struct stat st;
 
diff -upr mgetty-1.2.1.orig/mgetty.h mgetty-1.2.1/mgetty.h
--- mgetty-1.2.1.orig/mgetty.h	2025-05-13 14:10:12.871652206 +0000
+++ mgetty-1.2.1/mgetty.h	2025-05-13 14:18:59.312223891 +0000
@@ -148,7 +148,7 @@ int lprintf _PROTO((int level, const cha
  */
 typedef	void	RETSIGTYPE;
 
-#if defined(_SCO_DS) || defined(AIX5)		/* SCO OSR 5.0 */
+#if defined(_SCO_DS) || defined(AIX5) ||  __STDC_VERSION__ >= 202311L /* SCO OSR 5.0 */
 # define SIG_HDLR_ARGS	int signo
 #else
 # define SIG_HDLR_ARGS
--- mgetty-1.2.1/voice/libpvf/wav.c	2025-05-13 14:32:27.838460188 +0000
+++ mgetty-1.2.1.orig/voice/libpvf/wav.c	2025-05-13 14:30:54.753291362 +0000
@@ -43,7 +43,7 @@ unsigned short wBitsPerSample;
 unsigned long  data_length;             /* length of sound data in bytes */
 unsigned long  bytespersample;          /* bytes per sample (per channel) */
 
-static char *wav_format_str();
+static char *wav_format_str(unsigned wFormatTag);
 
 /* Read short, little-endian: little end first. VAX/386 style. */